Posting this here as I have to other groups in particular. A rumor specifically for USH's Halloween Horror Nights, and not one people quite expect.
Been hearing from those familar, that USH is looking to add purpose-built structures for the park's seasonal events. I have not heard if it is directly related to sprungs in the type of structure, or the conversion of pre-existing structures like SS20/22 and SS21/23. Current belief (with reason, as it seems there are group meetings occurring around the area) is H-Lot, which is currently being used as a storing area for Grinchmas.
(photo credit is by @HydraGen2299 for taking these from a publicly accessed area)